688151357 has 2 divisors, whose sum is σ = 688151358. Its totient is φ = 688151356.

The previous prime is 688151351. The next prime is 688151407. The reversal of 688151357 is 753151886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392792761 + 295358596 = 19819^2 + 17186^2 .

It is a cyclic number.

It is not a de Polignac number, because 688151357 - 2⁴ = 688151341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688151351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344075678 + 344075679.

It is an arithmetic number, because the mean of its divisors is an integer number (344075679).

Almost surely, 2^688151357 is an apocalyptic number.

It is an amenable number.

688151357 is a deficient number, since it is larger than the sum of its proper divisors (1).

688151357 is an equidigital number, since it uses as much as digits as its factorization.

688151357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 688151357 is about 26232.6391543055. The cubic root of 688151357 is about 882.8657251980.

The spelling of 688151357 in words is "six hundred eighty-eight million, one hundred fifty-one thousand, three hundred fifty-seven".